32
-1- Al/2018/01/T-1 1. ce;jkhw;w tPjj;jpd; gupkhzj;ijf; nfhLg;gJ> (1) MLT -1 (2) ML -1 T -1 (3) MLT -2 (4) ML 2 T -2 (5) ML -2 T -3 2. ehd;F rHtrkdhd Nfhy; fs; rJu tbt FWf;Fntl;ilf; nfhz;Ls;sd. ,it ehd;Fk; mUfUfhf itf;fg;gl;L mtw;wpd; nkhj;j mfyk; NtzpaH ,Lf;fpkhdp xd;wpdhy; msf;fg;gLtijg; glk; fhl;LfpwJ. ngwg;gl;l mstPL (8.4 ± 0.1)mm ck; , g+r;rpa thrpg;G (0.0 ± 0.1)mm ck; MFk;. xU Nfhypd; mfyk; ahJ>? (1) (2.10 ± 0.025) mm (2) (2.10 ± 0.05 ) mm (3) (2.1 ± 0.1) mm (4) (2.1 ± 0.2) mm (5) (2.1 ± 0.0) mm 3. xU mupaj;jpD}lhf nry;Yk; xspf;fjpH xd;wpd; ghijiag; glk; fhl;LfpwJ. i 1 ,i 2 ,d vd;gtw;wpw;F rhj;jpakhd ngWkhdq;fs;. i 1 i 2 d (1) 50 0 30 0 40 0 (2) 50 0 20 0 90 0 (3) 40 0 48 0 42 0 (4) 50 0 35 0 25 0 (5) 60 0 60 0 40 0 4. MrpupaH ,y;yhj re;jHg;gj;jpy; tFg;gpYs;s 5 khztHfs; vOg;gpa xyp kl;lj;jpd; msT 50dB ,45 khztHfs; Nkyjpfkhf cs;Eiofpd;wdH. xt;nthU khztDk; vOg;Gk; xypapd; xypr;nrwpT ruhrupahf rkkhdjhf ,Uf;Fk; vdf; fUjpd; xypr;nrwpTkl;lk; mjpfupf;Fk; msT. (1) 50dB (2) 25dB (3) 10dB (4) 3dB (5) 5dB ftdpf;f : ,t;tpdhj;jhs; 12 gf;fq;fspy; 50 tpdhf; fisf; nfhz;Ls;sJ. vy; yh tpdhf; fSf;Fk; tpil vOJf. tpilj;jhspy; jug;gl;Ls;s ,lj;jpy; ckJ Rl;nlz;iz vOJf. 1njhlf;fk; 50 tiuAs;s tpdhf; fs; xt;nthd;Wf;Fk; (1)> (2)> (3)> (4)> (5) vd ,yf;fkplg;gl;l tpilfspy; rupahd my; yJ kpfg; nghUj;jkhd tpiliaj;njupe;njLj;J>mjidtpilj;jhspy; cs;s mwpTWj;jy; fSf;F mikag; Gs;sb ( X) ,l;Lf; fhl;Lf. fzpg;ghidg; gad;gLj;jf;$lhJ. (g = 10 N kg -1 ) 60 0 d i 2 i 1 [gf;. 2 Ig; ghu;f;f

MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

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Page 1: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-1-Al/2018/01/T-1

1. ce;jkhw;w tPjj;jpd; gupkhzj;ijf; nfhLg;gJ>

(1) MLT-1

(2) ML-1

T-1

(3) MLT-2

(4) ML2T

-2(5) ML

-2T

-3

2. ehd;F rHtrkdhd Nfhy;fs; rJu tbt

FWf;Fntl;ilf; nfhz;Ls;sd. ,it ehd;Fk;

mUfUfhf itf;fg;gl;L mtw;wpd; nkhj;j mfyk;

NtzpaH ,Lf;fpkhdp xd;wpdhy; msf;fg;gLtijg; glk;

fhl;LfpwJ. ngwg;gl;l mstPL

(8.4 ± 0.1)mm ck;, g+r;rpa thrpg;G (0.0 ± 0.1)mm ck;

MFk;. xU Nfhypd; mfyk; ahJ>?

(1) (2.10 ± 0.025) mm (2) (2.10 ± 0.05 ) mm (3) (2.1 ± 0.1) mm

(4) (2.1 ± 0.2) mm (5) (2.1 ± 0.0) mm

3. xU mupaj;jpDlhf nry;Yk; xspf;fjpH xd;wpd; ghijiag; glk; fhl;LfpwJ. i1,i2,d vd;gtw;wpw;F

rhj;jpakhd ngWkhdq;fs;.

i1 i2 d

(1) 500

300

400

(2) 500

200

900

(3) 400

480

420

(4) 500

350

250

(5) 600

600

400

4. MrpupaH ,y;yhj re;jHg;gj;jpy; tFg;gpYs;s 5 khztHfs; vOg;gpa xyp kl;lj;jpd; msT 50dB ,45

khztHfs; Nkyjpfkhf cs;Eiofpd;wdH. xt;nthU khztDk; vOg;;Gk; xypapd; xypr;nrwpT ruhrupahf

rkkhdjhf ,Uf;Fk; vdf; fUjpd; xypr;nrwpTkl;lk; mjpfupf;Fk; msT.

(1) 50dB (2) 25dB (3) 10dB (4) 3dB (5) 5dB

ftdpf;f : ,t;tpdhj;jhs; 12 gf;fq;fspy; 50 tpdhf;fisf; nfhz;Ls;sJ.

vy;yh tpdhf;fSf;Fk; tpil vOJf.

tpilj;jhspy; jug;gl;Ls;s ,lj;jpy; ckJ Rl;nlz;iz vOJf.

1njhlf;fk; 50 tiuAs;s tpdhf;fs; xt;nthd;Wf;Fk; (1)> (2)> (3)> (4)> (5) vd ,yf;fkplg;gl;l

tpilfspy; rupahd my;yJ kpfg; nghUj;jkhd tpiliaj;njupe;njLj;J>mjidtpilj;jhspy; cs;s

mwpTWj;jy;fSf;F mikag; Gs;sb (X) ,l;Lf; fhl;Lf.

fzpg;ghidg; gad;gLj;jf;$lhJ. (g = 10 N kg

-1)

600

d

i2

i1

[gf;. 2 Ig; ghu;f;f

Page 2: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-2-

5. vspa iftpy;iy xd;;wpdhy; cUthf;fg;gl;l kha tpk;gj;jpd; Njhw;wg;gUkd; gw;wp nra;ag;gl;l

$w;Wf;fisf; fUJf.

(A) nghUspd; epiyapy; jq;fpapUf;Fk;

(B) fz;zpd; epiyapy; jq;fpapUf;Fk;

(C) tpy;iyapd; tYtpy; jq;fpapUf;Fk;.

rupahd $w;W/ $w;Wf;fs;

(1) (A),(B) kl;Lk; (2) (A),(C) kl;Lk; (3) (B),(C) kl;Lk;

(4) (A),(B),(C) vy;yhk; (5) NkYs;s vJTky;y

6. 30cm ePsKk; 0.5gm-1 myFePs jpzpTk; cila taypd; fk;gp xd;W ,Oitf;F cl;gLj;jg;gl;Ls;sJ.

,J xU mjpup %yk; mjpur;nra;ag;gLfpwJ. mjpupapd; mjpHntz; 500Hz ,ypUe;J 1500Hz ,w;F

mjpfupf;fg;gLk; NghJ mjpHntz;fs; 800Hz, 1200Hz vd;gd ed;F tiuaWf;fg;gl;l miytbtq;fisf;

nfhLf;fpd;wd. vdpd; fk;gpapd; ,Oit.

(1) 2.88N (2) 5.67N (3) 28.8N (4) 57.6N (5) 100N

7. Fwpj;j Neu ,ilntspf;fhd nghUnshd;wpd; ,af;fj;jpd; MHKLfy; Neu tiugpd; gug;gpy; ,Ue;J

Jzpaf;$baJ.

(1) Fwpj;j Neu Mapil ,af;fj;jpd; Nghjhd nghUspd; ruhrup Ntfk;.

(2) Neu Mapil ,Wjpapd; NghJ nghUspd; fjp

(3) Fwpj;j Neu Mapil ,af;fj;jpd; Nghjhd nghUspd; ruhrup fjp

(4) Fwpj;j Neu Mapil ,af;fj;jpd; Nghjhd nghUspd; Ntfj;jpy; Vw;gLk; khw;wk;

(5) Neu Mapilapd; eLg;gFjpapd; NghJ nghUspd; Ntfk;

8. epiyahd miyfs; gw;wp nra;ag;gl;l gpd;tUk; $w;Wf;fisf; fUJf.

(A) gLmiy;> njwpmiy vd;gtw;wpd; Nkw;nghUe;Jifapdhy; epiyahd miyfs; cUthfyhk;.

(B) ePH miyfspy; epiyahd miyfs; ngwg;gl KbahJ.

(C) epiyahd miy xd;iwf; nfhz;l Rukhdpf;fk;gpapd; ,Oit mjpfupf;fg;gLk; NghJ mjd; tPr;rk;

Fiwtilayhk;.

NkYs;stw;wpy; rupahdJ/ rupahdit?

(1) (A),(B) kl;Lk; (2) (A),(C) kl;Lk; (3) (B),(C) kl;Lk;

(4) (A),(B),(C) vy;yhk; (5) NkYs;s vJTky;y

9. glj;jpy; fhl;bathW ,U iriffs; xd;iwnahd;W neUq;;Ffpd;wd.

Fwpj;j xU fzj;jpy; iriffs; KOikahf Nkw;nghUe;Jfpd;wd. Nkw;nghUe;Jjy; jj;Jtj;jpw;fika

Fwpj;j mf;fzj;jpy; tpisAs; irifapd; tbtkhf miktJ.

(1) (2) (3) (4) (5)

Al/2018/01/T-1

[gf;. 3 Ig; ghu;f;f

Page 3: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-3-10. ,U Nfhsq;fs; xNu fjpHtPr;Rj;jpwd; nfhz;lit Mdhy; xU Nfhsj;jpd; tpl;lk; kw;iwa Nfhsj;jpd;

tpl;lj;jpd; ,uz;L klq;fhFk.; ,U Nfhsq;fSk; xNu ntg;gepiyf;F ntg;gkhf;fg;gl;L rHtrkkhd

#oYf;F rf;jpf; fjpHg;ig epfo;j;Jtjw;F mDkjpf;fg;gLfpwJ. rpwpa Nfhsj;jpd; Muk;g rf;jpf;fjpHg;G

tPjk; P vdpd; ngupa Nfhsj;jpd; Muk;g rf;jpf;fjpu;g;G tPjk;?

(1) P (2) 2P (3) 4P (4) 8P (5) 16P

11. 360g ePiuf; nfhz;l nfhs;fyd; xd;wpd; ntg;gepiy 00C MFk;. jpzpT njupahj 100

0C apy; cs;s ePH

,f; nfhs;fydpDs; Cw;wg;gl fyitapd; ntg;gepiy 400C apw;F tUfpwJ. nfhs;fydpDs; cs;s ePupd;

nkhj;j jpzpitf; fhz;f. (nfhs;fydpd; ntg;gf; nfhs;ssT Gwf;fzpf;fj;jf;fJ)

(1) 360g (2) 376g (3) 420g (4) 480g (5) 600g

12. cUis xd;wpDs; 760mmHg mKf;fj;jpy; rpiwg;gpbf;fg;gl;bUf;Fk; cyH tspapd; fdtsT> ntg;gepiy

vd;gd KiwNa 80cm3,7

0C MFk;. tspapd; fdtsT 38cm

3 MFk; tiu Kryj;jpd; ,af;fj;jpdhy;

Fiwf;fg;gLk; NghJ ntg;gepiy 280C tiu mjpfupj;jJ. ,g;NghJ cUisapDs; cs;s tspapd;

mKf;fk; mmHg ,y; ahJ ?

(1) 385 (2) 760 (3) 1520 (4) 380 (5) 1720

13.

Mspia %Lk; Kd;ghf Jhu cs;s A , B Mfpa ,U flj;jpf;Nfhsq;fSk; nfhz;Ls;s nkhj;j tpisAs;

Vw;wk; Q MFk;. Mspia %bagpd; Vw;wk; Q ,d; vd;d rjtPjk; Nfhsk; A ,y; fhzg;gLk;.

(1) 18% (2) 28% (3) 38% (4) 72 % (5) 82%

14. tspr;rPuhf;fp xd;wpd; myF xd;whdJ jplkhd ,Nyrhd Nfhy; xd;wpdhy; RtUld;

epiyg;gLj;jg;gl;bUg;gijg; glk; fhl;LfpwJ.

Nfhypd; Kidtplq;fspd; kPJ jhf;Fk; fpil> epiyf;Fj;J tpirfspd; jpirfis rupahff; fhl;LtJ.

A

B

18cm 7cm

Nfhy;

tspr;rPuhf;fp myF

Rth;

(1) (3) (4) (5) (2)

Al/2018/01/T-1

[gf;. 4 Ig; ghu;f;f

Page 4: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij

milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ. Nkw;$wpa

mtjhdpg;ig rupahf tpgupg;gJ.

(1) epa+l;ldpd; Fspuy;tpjp

(2) Nfu;r;;Nrhtpd; tpjp

(3) gpshq;fpd; tpjp

(4) ];nug;ghdpd; tpjp

(5) tPdpd;; ,lg;ngaHr;rptpjp

16. rtHf;fhu glyj;jpd; gUkid 10cm x6cm ,ypUe;J 10cm x11cm Mf mjpfupg;gjw;F nra;ag;gLk; Ntiy

3x10-4J Mapd; rtHf;fhuj;jpd; Nkw;gug;gpOtpir ahJ?

(1) 1.5 x10-2

Nm-1

(2) 3.0 x10-3

Nm-1

(3) 6.0 x10-2

Nm-1

(4) 11.0 x 10-2

Nm-1

(5) 3.0 x10-2

Nm-1

17. jhspd; topNa tyg;gf;fkhf cs;s rPuhd fhe;jg;Gyk; xd;wpw;F

nrq;Fj;jhf xU ePz;l Neupa flj;jp X gpbf;fg;gLfpwJ. mjDL

jhspw;F nrq;Fj;jhf cs;Nehf;fpa jpirapy; khwhkpd;Ndhl;lk;

nrYj;jg;gLk; NghJ fhl;lg;gl;l Gs;spfspy; mjpAaH gha

mlHj;jpiaf; nfhz;bUg;gJ.

(1) A (2) B (3) C (4) D (5) E

18. xU kpfg;ngupa fspkz; cUz;ilnahd;W NkypUe;J tpotplg;gl jiuia milfpwJ. fspkz;zpd;

GtpaPHg;G ikaj;jpd; MHKLfYf;Fk;(a) Neuj;jpw;Fk;(t) ,ilapyhd njhlHG

19. fhl;lg;gl;Ls;s Rw;wpNy rpypf;fd; jpuhd;;rp];uupd; capHg;G

tifiaf; NfhlYwr; nra;tjw;F R ,w;F nghUj;jkhd

ngWkhdk;.

(1) 50kΩ (2) 95 kΩ (3) 150 kΩ

(4) 200 kΩ (5) 250 kΩ

20. 30kgjpzpTila gdpf;fl;bf; Fw;wp xd;W rha;jsk; xd;wpd; kPJ itf;fg;gl;L 75N tpirAld; js;Stjd;

%yk; 1.5m cauj;jpw;F caHj;j Ntz;bapUg;gpd; rha;jsj;jpw;F ,Uf;f Ntz;ba Fiwe;j gl;r ePsk;

ahJ?

(1) 3m (2) 6m (3) 12m (4) 4.5m (5) 9m

A

C

B

ED X

0 0

a

t

(1)

0 0

a

(2)

t 0 0

a

(3)

t

0 0

a

(4)

t

(5)

0 0

a

t

5kΩ

R0 R

+14V

Al/2018/01/T-1

[gf;. 5 Ig; ghu;f;f

Page 5: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-5-21. r1,r2 vDk; NtWgl;l ,U mfj;jilfisAk; xNu

kpd;dpaf;f tpir E [Ak; cila ,U fyq;fs; jil R

cld; njhluhf ,izf;fg;gl;Ls;sd. Nthy;w;khdpapd;

thrpg;G 0V.

R ,d; jilg;ngWkhdkhf ,Ug;gJ.

0)1(21)2( rr 21)3( rr

21

21)4(rr

rr

2)5( 21 rr

22. rJu tbt mbiaf; nfhz;l jhq;fp xd;wpDs; 20cm cauj;jpw;F ePH

epug;gg;gl;Ls;sJ. 1500Nm-1 tpir khwpyp cila tpw;RUs; xd;Wld;

,izf;fg;gl;Ls;s xU Kryj;ijg; gad;gLj;jp jhq;fpahdJ glj;jpy;

fhl;lg;gl;lthW ,uz;L rk ghjpfshfg; gpupf;fg;gLfpwJ. tpw;RUspd; neUf;fy;

(ePupd; mlHj;jp 1000kgm-3, Kryj;jpw;Fk; jhq;fpf;Fk; ,ilapy; cuha;T ,y;iy

vdf; nfhs;f)

(1) 1cm (2) 1.1cm (3) 1.2cm (4) 1.3cm (5) 1.5cm

23. fzpdp xd;wpd; td;jl;L (Hard disk) 10 Row;rpfis epfo;j;Jk; NghJ Fwpj;j xU fjpia milfpwJ.

Mdhy; kPz;Lk; xa;Tf;F tUtjw;F 50 Row;rpfis epfo;j;JfpwJ. td; jl;L khwh Nfhz MHKLfy;

gUkd; x1, khwhf;Nfhz mkHKLfy; gUkd;; x2 vd;gtw;iwf; nfhz;bUg;gpd; x1/x2

5

1)1(

5

1)2( 5)3( 5)4( 25)5(

24. A,B vd;gd KiwNa xNuika jpz;kf; Nfhsf; flj;jpAk; jbj;j

flj;Jk; Nfhs XLk; MFk;. A Neuhf Vw;wg;gl;Lk; B Vw;wg;glhkYk;

,Ug;gpd; njhFjp rk;ge;jkhf nra;ag;gl;l gpd;tUk; $w;Wf;fSs;

gpioahdJ?

(1) xL B apd; ntspNkw;gug;gpy; NeNuw;wk; ,Uf;Fk;.

(2) Gs;sp Q ,y; cs;s kpd;Gy typik> kpd;dOj;jk; XL B ,d;

jbg;gpy; jq;fhJ.

(3) Gs;sp P apy; cs;s kpd;Gytypik XL B apd; jbg;gpy;

jq;fhJ.

(4) Gs;sp P apy; cs;s kpd;dOj;jk; XL B apd; jbg;G mjpfupf;;f

FiwAk;.

(5) XL B Gtpj; njhLg;gplg;gbd; Gs;sp P apy; cs;s

kpd;Gytypik mjpfupf;Fk;.

25. kuf;fwpfisAk; NtW rpy czTfisAk; mKf;f mLg;gpy; rikj;jy; Neuj;ijAk; vupnghUisAk;

Nrkpg;gjw;F cjTfpwJ Vnddpy;.

(A) caH mKf;fj;jpd; fPo; ePuhdJ 1000C ,Yk; caHthd ntg;gepiyapy; nfhjpf;fr; nra;ag;gLfpwJ.

(B) caH mKf;fj;jpd; fPo; ePuhdJ 1000C ,Yk; Fiwthd ntg;gepiyapy; nfhjpf;fr; nra;ag;gLfpwJ.

(C) ntg;g ,og;G FiwtilAk;.

(D) ePuhtpapd; xLf;fk; ghJfhf;fg;gLk;.

Nkw;Fwpj;jtw;Ws; rupahdJ / rupahdit.

(1) (A)kl;Lk; (2) (B) kl;Lk; (3) (A),(C),(D) kl;Lk; (4) (B),(C),(D) kl;Lk; (5) (B),(D) kl;Lk;

20cm

10cm

A P

B Q

Al/2018/01/T-1

[gf;. 6 Ig; ghu;f;f

Page 6: MergedFile · -4-15. xU ,Uk;Gj;Jz;lhdJ jPr;Rthiyapy; #lhf;fg;gLfpwJ. Kjypy; mJ kq;fpa rptg;G epwj;ij milfpwJ. gpd;dH nrk;kQ;rs; epwj;ijAk; ,Wjpapy; mJ ntz; epwj;ijAk; milfpwJ

-6-

26. M jpzpTila rPuhd mlHe;j Nfhs tbtf; Nfhs;(X), jdJ Nkw;gug;gpy; Vw;gLj;Jk; <Hg;gOj;jKk;>

m jpzpTila NtW XH rPuhf mlHe;j Nfhs tbtf; Nfhs ;(Y) jdJ Nkw;gug;gpy; Vw;gLj;Jk; <Hg;gOj;jKk;

rkd; MFk;.

m

M)1(

M

m)2(

2

2

)3(m

M2

2

)4(M

m1)5(

27. 500JK-1

ntg;gf;nfhs;ssT cila fNyhupkhdpapDs; 1kg jpzpTila ePH vLf;fg;gl;L 2kW tYTila

mkpo;g;G ntg;gkhf;fp itf;fg;gl;L njhopw;gltplg;gLifapy; #oYf;F ntg;g ,og;G ,y;iy vdpy;

njhFjpapd; ntg;gepiy caHr;rp tPjk; ahJ? (ePupd; jd;ntg;gf; nfhs;ssT 4200Jkg-1

K-1

)

(1) 0.3 0Cs

-1(2) 0.35

0Cs

-1(3) 0.43

0Cs

-1(4) 0.45

0Cs

-1(5) 0.5

0Cs

-1

28. ANudpak; -238 ,d; fU xd;W njhlu;r;rpahd gbfspy; Nja;tile;J fhl;bathW <ak; - 206 fUthf

khw;wkilfpwJ.

PU 20682

23892

xt;nthU gbKiwapYk; xU my;yJ xU - Jzpf;if kl;LNk fhyg;gl;bUg;gpd ; vt;

vz;zpf;ifahd - Jzpf;iffs; fhyg;gl;bUf;Fk;?

(1) 6 (2) 8 (3) 10 (4) 16 (5) 12

29. ,yl;rpa ,Uthap xd;W Kd;Kff;Nfhlypd; NghJ g+r;rpa jiliaAk; gpd; Kff;Nfhlypd; NghJ Kbtpyp

jiliaAk; nfhz;Ls;sJ. ,t; ,Uthap MdJ 2Ω jil xd;Wld; njhluhf 3v kpd;dpaf;f tpirAk;

mfj;jil 1Ω ck; nfhz;l fyk; xd;wpd; Kbtplq;fSf;Ff; FWf;fhf ,izf;fg;gl;bUg;gijg; glk;

fhl;LfpwJ.

caHjil Nthy;w;khdp xd;W ,Uthapf;Fk; jilf;Fk;

FWf;fhf ,izf;fg;gl;Ls;sJ. ,Uthapapd;

,Utopj;njhLg;Gfspd; NghJk; Nthy;w;khdp thrpg;igr;

rupahff; fhl;LtJ.

Kd;Kff; Nfhly; gpd;Kff; Nfhly;

(1) 1V 3V

(2) 2V 0V

(3) 2V 3V

(4) 3V 0V

(5) 3V 3V

30. ;Ez;miyf;fdypapy; (Micro wave oven) ePUs;s czT gjhHj;jk; xd;iw kpfTk; tpidj;jpwdhd

Kiwapy; #lhf;Ftjw;F mJ nfhz;bUf;f Ntz;ba epge;jid. ;

(1) Ez; miyf; fdypapy; IR fjpHfshy; ntg;gk; cw;gj;jpahf;fg;gly; Ntz;Lk;.

(2) Ez;miyfspd; kPbwdhdJ ePu;%yf;$Wfspd; kPbwDld; fl;lhakhf gupTf;Fs;shjy; Ntz;Lk;.

(3) Ez;miyfspd; kPbwdhdJ ePu;%yf;$Wfspd; ,aw;if kPbwDld; vt;tpj njhlh;Gk; nfhz;bUf;f

Ntz;bajpy;iy.

(4) Ez; miyfshdJ ntg;g miyfs; vd;gjhy; mit vg;nghOJk; ntg;gj;ij cw;gj;jpahf;ff;

$baitahf ,Uf;Fk;.

(5) Ez; miyfs; rf;jpnfhz;l Nghl;Nlhd;fis nfhz;bUj;jy; Ntz;Lk;.

X vd;Dk; Nfhspd; Miu Y vd;Dk; Nfhspd; Miu

vd;Dk; tpfpjk;

3V

V

,Uthap

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-7-31. fhl;ba ,UthapfisAk ;, fyq;fisAk;, jiliaAk;

nfhz;lRw;wpy; A , B vd;gd nga;g;Gf;fSk;,Y

gag;Gk; Mapd; ,r;Rw;W vt; ,yj;jpudpay;

gliyf;F rktYthdJ

(1) OR (2) NOR (3) AND

(4) NAND (5) XOR

32. cuha;Ts;s fpilj;jiu xd;wpy;, ge;jpd; jpzpT ikak;gw;wp Row;rp Ntfk; ,y;yhJ ge;jpw;F fpilf;fjp

xd;W jsj;jpd;tspNa nfhLf;fg;gLfpwJ. ge;jpd; jpzpT ikak; gw;wpa Row;rp Ntfj;jpw;Fk;()

Neuj;jpw;Fk;(t) ,ilapyhd njhlHig rupahff; fhl;Lk; tiuG.

33. nyd;rpd; tpjpg;gb> flj;jp xd;wpy; Jz;lg;gLk; kpd;Ndhl;lj;jpd; jpirapdhy; cUthf;fg;gLk; tpisTfs;.

(1) cUthf;Fk; fhuzpfis Mjupf;fpwJ.

(2) cUthf;Fk; fhuzpfis vjpHf;fpwJ

(3) mjpf ntg;g tpisit cUthf;FfpwJ.

(4) kpfg;ngupa kpd;dOj;jj;ij Mjupf;fpwJ.

(5) kpfg;ngupa kpd;dOj;jij vjpHf;fpwJ.

34. Xa;tpypUe;J ngupa ngsjpftpay; Gj;jfk; xd;iw ifapy; gpbj;jgb ePH xU juhrpd; kPJ epw;Fk; NghJ

mjd; thrpg;G 700N. t =1secc ,y; ePH Gj;jfj;ij Nky; Nehf;fp Jf;f Muk;gpj;J t = 2sec ,y; Gj;jfk;

miu kPw;wH cauj;jpy; kPz;Lk; Xa;tpw;F tUfpd;wPh;. juhrpd; thrpg;G(R) Neuj;Jld;(t) khWgLtij rpwg;ghf

tiff;Fwpf;Fk; tiuG gpd;tUtdtw;wpy; vJ?

t 0

0

(2) (5)

t 0

0

t 0

0

t 0

0

(3) (4)

t 0 0

(1)

0.5 1 1.5

2 2.5 3

R/N

0 690

695

700

705

710

t/s

(2)

0.5 1 1.5

2 2.5 3

R/N

0 690

695

700

705

710

t/s

(1)

0.5 1 1.5

2 2.5 3

R/N

0 690

695

700

705

710

t/s

(3)

0.5 1 1.5

2 2.5 3

R/N

0 690

695

700

705

710

t/s

(4)

0.5 1 1.5

2 2.5 3

R/N

0 690

695

700

705

710

t/s

(5)

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-8-35. 30m/s ,y; nry;Yk; Car tz;b xd;W epiyahf epw;Fk; Nehf;Feu; xUtiu mZFk; NghJ 100Hz kPbwd;

nfhz;l CJFoiy xypf;fpd;wJ. tspapy; xypapd; Ntfk; 330m/s Mapd; Nehf;FeUf;F CJFoypd;

Njhw;w kPbwd;.

(1) 360Hz (2) 300Hz (3) 220Hz (4) 200Hz (5) 110Hz

36. khwhf;fdtsT thAntg;gkhdpAk; jputf;Fkpo; ntg;gkhdpAk; Fwpj;j miwntg;gepiyia msf;f xNu

Ntisapy; gad;gLj;jg;gLfpd;wd.

(A) ,U ntg;gkhdpfSk; Nky;epiyj;j Gs;sp fPo;epiyj;j Gs;spfisf; nfhz;L mstPL nra;ag;gl;L

,Ug;gjhy; ,U ntg;gkhdpfSk; xNu ntg;gepiyia jUk;

(B) jputf;Fkpo; ntg;gkhdpapd; ntg;gkhd ,ay;G ntg;gepiyAld; Vfgupkhzkhf khwhJ vd;gjhy;

,U ntg;gkhdpfSk; ntt;NtW thrpg;ig fhl;Lk;.

(C) fz;zhbf; Fkpopd; fdtsT ntg;gepiyAld; Vfgupkhzkhf khwhJ vd;wNghjpYk; ntg;gepiyAld;

thAtpd; tpupT mjpfk; vd;gjhy; thA ntg;gkhdp miwntg;gepiyf;F mz;kpj;j thrpg;gpidj;

jUk;.

NkYs;s $w;Wf;fspy;

(1) (A)kl;Lk; cz;ikahdJ (2) (A),(B) kl;Lk; cz;ikahdit

(3) (A),(C) kl;Lk; cz;ikahdit (4) (B),(C) kl;Lk; cz;ikahdit

(5) (A),(B),(C) vy;yhk; cz;ikahdit

37. fdTUf; fl;likg;G xd;W 12 rHtrk fk;gpfisf; nfhz;L mikf;fg;gl;lJ. fk;gpfs; xt;nthd;wpdJk;

jil R Mapd;

mikg;gpy; AB apw;Ff; FWf;Nfahd tpisAs;jil, fdTUf; fl;likg;Gpd; rkr;rPH ,ay;igf; fUj;jpy;

nfhz;L mjw;fika fzpg;gplg;gl;lJ. gpd;tUtdtw;wpy; mjw;F xg;ghd mikg;ghf mikaf;$baJ.

A

B

(1)

2R

R

R

R

R

R R R 2R

R

R

R

R

A

B

(2)

R/2

R

R

R

R

R R R R/2

R

R

R

R

A

B

(3)

R

R

R

R

R

R R R R

R

R

R

R

A

B

(4)

2R

R/2

R/2

R/2

R/2

R/2 R R R/2

R/2

R/2

R/2

R/2

A

B

(5)

2R

2R

2R

2R

2R

2R 2R 2R 2R

2R

2R

2R

2R

A

B

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-9-

38. xU fyj;jpw;F FWf;Nfahd mOj;j NtWghL V MdJ kpd;Ndhl;lk; I Ald;

khWgLtij tiuG fhl;LfpwJ. xU fyk;; mjd; MAl;fhyj;ij neUq;Fifapy;

mjd; mfj;jil mjpfupg;gJld;. kpd;dpaf;f tpir FiwfpwJ.

gpd;tUtdtw;Ws; vt; tiuglk; MAl; fhyj;jpd; Kbit neUq;fpa fyk;

xd;wpw;fhd tiuig xg;gpl;L fhl;;LfpwJ? (Gjpa tiuG Gs;spf;; Nfhl;bdhy;;

fhl;lg;gLk;.)

39. fhl;lg;gl;l re;jpg;GytpisT jpuhd;rp];uu;(JFET) Rw;wpy;,

jpuhd;rp];uh; khwhkpd;Ndhl;l nraw;gLepiyapy; ,Ug;gjw;F

VDD,opTg;ngWkhdk; ahJ? ,q;F VP = - 4V, IDSS=12mA

(1) 4V (2) 10.72V (3) -4V

(4) 2.72V (5) 4.72V

40.

fhl;ba mikg;G A vDk; gug;Gila rHtrk jl;Lf;fshyhd xU njhlHe;epiyf; nfhs;sstpr;

NrHkhdkhFk;. ,q;F nfhs;sstp jl;Lfspw;fpilg;gl;l Juk; NtWgLk; tifapYs;sJ. Mdhy;

nfhs;sstpfis ,izf;Fk; jl;Lfspw;Fr; nrq;Fj;jhd fk;gpfs; d vDk; rkePsKilad. Muk;g>

,Wjp jl;Lfspw;fpilg;gl;lJuk; D, ,q;F n vz;zpf;ifahd nfhs;sstpfs; ,Ug;gpd; ,j;njhFjpapd;

rktYf;nfhs;sstk;.

ndD

Ao

)1(

nd

Ao)2(dnD

Ao

2

)3(

dnD

Ao

1)4(

(5) fzpf;f KbahJ

41. kPw;wHghyj;ij gad;gLj;jp fk;gptbtpy; mike;j gjhh;j;jj;jpd; jw;jil () Ij; Jzptjw;fhd xU

gupNrhjidapy; xU khztd; ,w;F epakg;ngWkhdj;jpYk; Fiwthd ngWkhdj;ij ngw;whd; khztd;

,w;Ff; Fiwe;j ngWkhdk; fpilg;gjw;fhd fhuzq;fisg; gpd;tUk; $w;Wf;fspd; %yk;

tpsf;fpAs;shd;.

(A) ,g;gupNrhjidapy; gad;gLj;jg;gLk; kpd;fyj;jpd; kpd;dpaf;ftpirahdJ gupNrhjidapd;NghJ

tPo;r;rpaile;jpUf;fyhk;

(B) fk;gpapd; ntt;NtW ,lq;fspy; tpl;lk; msf;fg;gl;L tpl;lj;jpw;fhd ruhrupg;gUkd; fzpg;gPl;by;

gad;gLj;jhJ tpl;lj;jpw;fhf vLf;fg;gl;l xU mstPl;Lg;ngWkjp fzpg;gPl;by; gad;gLj;jp ,Uj;jy;

fhuzkhf ,Ue;jpUf;fyhk;.

(C) fk;gpapd; cz;ikahd ePsj;jpw;Fupa gUkdpYk; Fiwthd gUkd; fzpg;gPl;by; gad;gLj;jp

,Uf;fyhk;.

khztdpd; Nkw;Fwpj;j $w;Wf;fspy;.

(1) (A)kl;Lk; cz;ikahdJ (2) (B) kl;Lk; cz;ikahdJ

(3) (A),(B) kl;Lk; cz;ikahdit (4) (B),(C) kl;Lk; cz;ikahdit

(5) (A),(B),(C) vy;yhk; cz;ikahdit

I

V

(1) I

V

(2) I

V

(3) I

V

(4) I

V

(5)

D

d d d d d

(1) (2) (3) (4)

V

I

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-10-42. ,ay;Gepiy ePsk; l1 ck; tpir khwpyp K1 ck; nfhz;l tpw;RUs; xd;W ,ay;G epiy ePsk; l2 ck;

tpirkhwpyp K2 ck; nfhz;l ,d;ndhU tpw;RUSld; rkhe;jukhf ,izf;fg;gl;L cs;sij cU

fhl;Lfpd;wJ.

,U RUs;fspdJk; NrHf;ifahdJ ,ay;G epiy ePsk; l ck; tpir khwpyp K ck; nfhz;l jdp xU

tpw;RUisg; Nghd;W njhopw;gLfpwJ Mapd;.

21

2121 ,)1(

ll

lllKKK

21

221121 ,)2(

KK

KlKllKKK

21

122121 ,)3(

KK

KlKllKKK

21

2211

21

2211 ,)4(KK

KlKll

ll

KlKlK

21

1221

21

2112 ,)5(KK

KlKll

ll

KlKlK

43. fhl;bathW T ntg;gepiyapYs;s tspapy;; fhzg;gLk; Nkw;gug;gpOtpirAila rth;fhufiurypdhyhd r

MiuAila rtHf;fhuFkpo; gw;wpa gpd;tUk; $w;WfSs; gpioahdJ

(1) fhl;ba rtHf;fhuFkpopDs; cs;s tspapd; myFfdtstpw;fhd %y;

tspkz;lytspapYk;>rRT

4,dhw; $lthFk;.

(2) ntg;gepiy rpwpjsthy; mjpfupf;f Fkpo; vg;NghJk; ngUf;ff; fhzg;gLk;.

(3) ntg;gepiy rpwpjsthy; mjpfupf;f FkpopDs; mKf;fk; mjpfupf;Fk;.

(4) ntg;gepiy rpwpjsthy; mjpfupf;f FkpopDs; cs;s thAthy; Ntiy nra;ag;gLk;.

(5) ntg;gepiy mjpfupg;gpd; NghJ rtHf;fhuf;Fkpo; ngWk; ntg;gk; MdJ thAtpdhw; nra;ag;gLk;

Ntiy> thAtpd; cl;rf;jp mjpfupg;G> Fkpo;Mf;fg;gl;l rth;f;;fhuf;fiurypd; ntg;gepiy mjpfupf;f

Njitahd ntg;gk; vd;gtw;wpd; $l;Lj;njhiff;Fr; rkkd;W.

44. fhl;ba ghj;jpuq;fs; rk mbg;gug;G A Ak; rk nfhs;ssT V Ak; nfhz;lit. ,itxt;nthd;Wk;

KOikahf mlHj;jp pw cila ePhpdhy; epug;gg;gl;Ls;sd.[

ePhpdhy; ghj;jpuq;fs; xt;nthd;wpdjpd;; tisgug;gpw;F nfhLf;Fk; tpisASijg;gpd; gUkd;> jpir

vd;gtw;iw rhpahfj;jUtJ

(I) (II) (III)

(1) (V-Ah1)wg ↓ (Ah2 – V)wg ↑ 0

(2) (V + Ah1)wg ↓ (V+Ah2)wg ↑ 0

(3) Ah1wg ↓ Ah2wg ↑ 0

(4) Ah2wg ↑ Ah2wg ↓ 0

(5) (V-Ah1)wg ↑ (Ah2 – V)wg ↓ 0

F F RUs; -1

RUs; -2

l

r

(III) (II) (I)

h2

h1

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-11-45. cUtpy; fhl;lg;gl;l Rw;wpy; fyj;jpd; kpd;dpaf;f tpir E0 mfj;jil Gwf;fzpf;fj;jf;fJ. khWk; jil R

,d; ngWkhdk; g+r;rpaj;jpypUe;J Kbtpypf;F khw;wg;gLk; NghJ R cld; mOj;j NtWghLfs; V1,V2 tpd;

xj;j khwy;fis kpfr;rpwe;j Kiwapy; tif Fwpg;gJ.

46. mUfpNy fhzg;gLk; (A),(B),(C),(D)

Rw;Wf;fspy; rHtrkdhd

mk;gpaHkhdpfSk; (A) rHtrk

Nthy;w;WkhdpfSk; (V)

,izf;fg;gl;Ls;sd. vr;Rw;Wf;fspy;

(1) (A),(B) ,y; rkdhf mikAk;.

(2) (B),(C) ,y; rkdhf mikAk;

(3) (C),(D) ,y; rkdhf mikAk;.

(4) (A),(D) ,y; rkdhf mikAk;

(5) vr;Rw;Wf;fspYk; rkdhf mikahJ.

47. a vDk; Vfgupkhz tpupifj;jpwd; cila (a) vDk; tl;lj;jl;bypUe;J Miur;rpiw

xd;W ntl;b mfw;wg;gl;L mjDs; b vDk; Vfgupkhz tpupifj;jpwDila mNj

msthd (b) vDk; Miur;rpiw tbtj;jl;L kl;Lkl;lhf itf;fg;gl;Ls;sijg; glk;

fhl;LfpwJ. ,j; njhFjpapd; ntg;gepiy rpwpjsthy; cau;j;jg;gl (,q;F b >a )

(1) ,Wfpa epiyapy; (A) apy; fhl;bathW ,Uf;Fk;.

(2) ,Wfhj epiyapy; (A) apy; fhl;bathW ,Uf;Fk;.

(3) ,Wfpa epiyapy; (B) apy; fhl;bathW ,Uf;Fk;.

(4) ,Wfhj epiyapy; (B) apy; fhl;bathW ,Uf;Fk;

(5) ,Wfhj epiyapy; (C) apy; fhl;bathW ,Uf;Fk;

(V) khdpapd; thrpg;G

(A) khdpapd; thrpg;GvDk; tpfpjk;

Eo

r=0

R0

V1

R0

V2

R

(A)

A V

2kΩ

6V

r=0

(B)

A

V2kΩ

6V

r=0

(D)

A

V2kΩ

6V

r=0

(C)

A

V

2kΩ

6V

r=0

(A) (B) (C)

(a)

(b)

V2

V1

R

V

(1)

V2

V1

R

V

(2)

R

V

(4)

V1

V2

R

V

(5)

V2

V1

V1

V2

R

V

(3)

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-12-48. xU Foe;ij tl;ltbt FWf;Fntl;il cila RoYk; tpz;ntsp epiyak; xd;wpy; ,Uf;Fk; NghJ ge;J

xd;iw jdf;F Nky;Nehf;fp vwpfpwJ. epiyak; miur;Row;rpia epfo;j;Jk; re;jHg;gj;jpy; ge;J kPz;Lk;

Foe;ijahy; gpbf;fg;gLfpwJ. Foe;ijapd; ghHitapy; ge;jpd; ghijiahf ,Uf;ff;$baJ (Foe;ij

RoYk; epiyaj;jpd; mbg;gFjpapy; ,Ug;gJ glj;jpy; fhl;lg;gLfpwJ. mj;Jld; ge;jpd; Muk;g ];jhdKk;

fhl;lg;gl;Ls;sJ.)

49. glk; (a) ,y; fhl;lg;gl;l fk;gpr;RUshdJ jhspd;jsj;jpd; cs; Nehf;fpa jpirapy;

mjpfupf;Fk;fhe;jg;Gyj;ij cUthf;Ffpd;wJ. xU Jhz;ly; kpd;Ndhl;lkhdJ fk;gpr;RUis Rw;wpAs;s

flj;Jk; tisaj;jpy; cUthf;fg;gLfpd;wJ. me;j kpd;Ndhl;lj;jpd; %yk; Fkpo;fs; A, B xspA+l;lg;gLfpwd.

glk; (b) apy;P, QGs;spfs; jhspd;jsj;jpYs;s xU ntWk;fk;gpapdhy; ,izf;fg;gLfpwJ. P, Q

,izf;fg;gl;l gpd;

(1) Fkpo; A mizAk;;, Fkpo; B gpufhrkhFk;

(2) Fkpo; B mizAk;;, Fkpo; A gpufhrkhFk;

(3) Fkpo; A mizAk;;, Fkpo; B kq;Fk;;

(4) ,uz;L Fkpo;;fSk; mizAk;

(5) Nkw;Fwpg;gpl;ltw;wpy; vJTk; my;y

50. fhl;lg;gl;l ,Nyrhd tpw;RUspd; Kidfspy; A, B vDk; rk jpzpTfs; ,izf;fg;gl;Ls;sd.

njhFjpahdJ tpw;RUspd; mr;R epiyf;Fj;jhf ,Uf;f neUf;fpg;gpbf;fg;gl;L tpLtpf;fg;gl

njhlUk; ,af;fj;jpy; A, B kw;Wk; njhFjpapd; jpzpTikak; (G) Mfpatw;wpd; Ntf(V) Neu(t)

tiuGfis rupahf fhl;LtJ.

fk;gpr;RUs;

A

B

(1) (2)

(5) (4)

(3)

(1) (2) (3) (4) (5)

Al/2018/01/T-1

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01. (a)

Xu; Fwpj;j tiff;fyg;GNyhfj;jhyhd Fz;nlhd;W tspapYk;> fpsprNuhypy; Kw;whf mope;Js;s

epiyapYk; cs;s NghJ ,ioapYs;s ,Oitfs; KiwNa T1,T2 MFk;. fyg;GNyhfj;jpdJk;

fpsprNuhypdJk; mlHj;jp KiwNa m, g (m >g) MFk;. NkYk; nfhOf;fpAld; Fz;bd; fdtsT V.

i. T1,T2 vd;gtw;Wf;fhd Nfhitfis vOJf?

………………...………………………………..………………………………………………………………….

………………...………………………………..………………………………………………………………….

ii. tpfpjk; T2/T1 = 4/5, m = 6250 kgm-3 Mapd ; (m –g) If; fhz;f.

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iii. ,Oitfis mstplg;gad;gLj;jpa tpw;wuhrpd; ,opntz;zpf;if 0.1N Mapd; thrpg;G ngwg;gLk; ,U

re;ju;g;gq;fisAk; fUj;jpw; nfhz;L rjtPj tO 10% my;yJ mjdpYk; FiwthapUg;gjw;F V ,w;F,Uf;ff; $ba kpff;Fiwe;j ngWkjp ahJ?

………………...………………………………..………………………………………………………………….

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……………………………………………………………………………………………………………………….

(b) Nkw;$wg;gl;l fyg;GNyhfj;jhyhd ntt;NtW MiuAila

Nfhstbf;Fz;Lfs; fpsprNuhiyf;nfhz;l caukhd ghj;jpuj;jpy;

Xa;tpypUe;J tpLtpf;fg;gLfpd;wd.

i. ,wg;gH ehlhf;fshy; milahsg;gLj;jg;gl;l ,U caukhd

gFjpfisAk; Fz;L flf;f vLj;j Neuq;fs; rkkhf miktjpypUe;J

vjid cWjpnra;ayhk;?

………………...………………………………..….....……………………...

……………………………………….………………...……………………..

…………..………………………………………………………………… l

,wg;gHehlh

l

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ntt;NtW MiuAila Nfhsq;fSld; gupNrhjid Nkw;nfhs;sg;gl;L Miuapd; tu;f;fj;Jld; (r2) KbT

Ntfj;jpd; (Vs) khwy; tiuGgLj;jg;gl tiuG fhl;bathW mike;jJ.

𝑉𝑠 =2𝑟2

9

ii. gbj;jpwidf;fz;L fpsprNuhypd; ghFepiyf;Fzfk; If; fzpf;f?

………………...………………………………..………………………………………………………………….…

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iii. ,d; ngWkjpapy; ghjpg;ig Vw;gLj;Jk; #oy; fhuzp ahJ?

………………...……………………………………………..…………………..………………………………

iv. ePupd; ghFepiyf;Fzfk; kpff;Fiwthd 8.90 x10-4Pas vDk; ngWkjpiaf;nfhz;lJ ,g;gupNrhjidia

gad;gLj;jp ePupd; ghFepiyf;Fzfk; JzptjpYs;s ,lHghL ahJ?

v. NfhskhdJ KbT Ntfj;ij mile;j gpd;dH fpsprNuhypDlhf khwh ,af;frf;jpAld; tpOfpwJ.

Mdhy; mjd; mOj;jrf;jp njhlHr;rpahff; FiwfpwJ. ,q;F rf;jp vt;tpjk; fhf;fg;gLfpwnjd;gij

tpsf;Ff?

(m – g)g

………………………………………………………………….……………………………………………………

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02. (a) Nrspd;Kiwiag;gad;gLj;jp xH cNyhfj;jpd; ntg;gf;flj;jhiwj; Jzpag;gad;gLj;jg;gLk; gupNrhjid

xOq;fikg;G glj;jpw; fhl;lg;gl;Ls;sJ.

i. ,g;gupNrhjidia Nkw;nfhs;sj;Njitg;gLk; mstPl;L cgfuzq;fs; ahit?

ii. ,q;F khwh mKf;fj;njhl;b gad;gLj;jg;gLtjd; Nehf;fk; ahJ?

………………...………………………………..…………………………………………………………………...

(b) cNyhfj;jpd; ntg;gf;flj;jhiwj;Jzptjw;F Nkw;fhl;ba Kiwf;FgpujpaPlhf fPo;tUk; Kiw

gad;gLj;jg;gLfpwJ. ,q;F rkePsKladTk; rk FWf;Fntl;Lg;gug;GiladTkhd nrg;G> mYkpdpak;

Mfpatw;whyhd Nfhy;fis Kidf;F Kid njhLj;J mikf;fg;gl;l gupNrhjid mikg;G

fhl;bathW.

i. ,g;gupNrhjidapy; nfhjp ePuhtp> ciwfyit Mfpad gad;gLj;jg;gLtjd; Nehf;fk; ahJ?

………………...………………………………..………………………………………………………………….

ii. Cu,Al Mfpatw;wpd; ntg;gf;flj;jhW KiwNa K1,K2 ntg;gkhdp thrpg;Gf;fs; θ1 θ2, θ3, θ4

Nfhy;fspDlhd ntg;gg;gha;r;ry; tPjj;ijf; fUJtjd; %yk; K1,K2, θ1, θ2, θ3 θ4 ,ilNaahd njhlHigg;

ngWf.

…………………………..……………………………………………………………………………………………

iii. K1 = 400Wm-1K-1 cWjpepiyapy; ngwg;gl;l ntg;gkhdpthrpg;Gf;fs; 91.20C, 80.10C, 54.60C, 32.40C

Mapd; mYkpdpaj;jpd; ntg;gf;flj;jhW K2 [f; fzpf;f?

……...………………………………..……………………………………………………………………………….

θ1 θ2 θ3 θ4

d d

nfhjpePuhtp

ciwfyit

fhtw;fl;L

re;jp TAl Nfhy; Cu Nfhy;

………………...………………………………..………………………………………………………………….…

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iv. tof;fkhd Kiwiaf;fhl;bYk; ,k;Kiwapd; mD$yk; ahJ?

………………...………………………………..…………………………………………………………………….

v. d=5cm, Nfhy; xd;wpd; ePsk; 15cm Mapd; Nru;khdf;Nfhypd; tpisAs; ntg;gf;flj;jhW ahJ?

……...………………………………..……………………………………………………………………………….

vi. re;jp T ,d; ntg;gepiyahJ?

……...………………………………..……………………………………………………………………………….

vii. Nfhypd; FWf;Fntl;Lg;gug;G 8cm3 Mapd; Nfhy;topNaahd ntg;gg;gha;r;ry; tPjk; ahJ?

03. xU jpUrpakhdp ghtpf;fg;gLk; gupNrhjid xd;wpy; Kjypy; jpUrpakhdpapd; $Wfs; nrg;gQ;nra;ag;gl

Ntz;baJ mtrpakhFk;.

(a) jpUrpakhdpapd; $Wfs; nrg;gQ;nra;ag;gLk;NghJ gpd;gw;wg;gLk; xOq;iff;Fwpg;gpLf.

(b) njhiyfhl;bapd; ghHitj;Jz;bw;fhd nrg;gQ;nra;if vt;thW Nkw;nfhs;sg;gLfpwJ?

(c) fhl;lg;gl;l jpUrpakhdpapd; gpujhd mstpilapy; 29 rpW gpupTfSld; NtzpaH mstpilapd; 30gpupTfs; nghUe;jf; fhzg;gLfpd;wd.

i. fUtpapd; ,opT vz;zpf;if ahJ?

………………...………………………………..…………………………………………………………………..

ii. fhl;ba epiyapYs;s thrpg;G ahJ?

(d) mupankhd;wpd; Kfj;jpy; xspf;fjpupd; gLNfhzj;Jld; tpyfy; Nfhzk; khWgLtijf;fhl;Lk; tiuig

tiutjw;fhd gupNrhjid xd;iwj; jpUrpakhdpapd; cjtp nfhz;L Nkw;nfhs;sj;

jPHkhdpf;fg;gl;Ls;sJ. ,jd; Nghjhd gupNrhjid xOq;fikg;ig glk; fhl;LfpwJ.

…………………………..……………………………………………………………………………………………

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fhl;baepiyapy; gpstpd; tpk;gepiyfspw;F ngw;w thrpg;Gf;fs; T1,T3 MFk;. mupak; mfw;wg;gl;L

NeHtupirahf;fpf;F NeNunjhiyfhl;bia nfhz;L te;J ngw;w thrpg;G T2 MFk;. T1 ,ypUe;J T3 tiu

tyQ;Ropahf mstpil mjpfupj;Jr; nry;fpwnjd;f.

i. thrpg;G T1 ,w;Ff;fhuzkhd xspf;fjpH cUthFk; tpjj;ijf;Fwpg;gpLf.

………………...………………………………..…………………………………………………………………….

………………...………………………………..…………………………………………………………………......

ii. tpyfy;Nfhzk; d ,w;fhd Nfhitia thrpg;Gf;fs; rhHgpw;jUf?

iii. gLNfhzk; i ,w;fhd Nfhitia thrpg;Gf;fs; rhHgpw;jUf?

iv. i vjpH d tiuig fPOs;s mr;rpy; tiuf?

v. fhl;ba mupaj;jpd; mNj mupaf;NfhzKila Mdhy; KwpTr;Rl;b$ba mupankhd;Wld; gupNrhjid

Nkw;nfhs;Sk; NghJ, ngwg;gLk; tiuig NkYs;s tiuGld; xg;gpl;L tiuf. mt;tiuig X vdf;Fwpf;f.

NeHtupirahf;fp

T3 T2

T1

…………………………..……………………………………………………………………………………………

…………………………………………………….……………………….....………………………………………

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(e) jpUrpakhdp nrg;gQ;nra;jgpd; mupankhd;wpd; mupaf;Nfhzk; A I mwptjw;F khztd; xUtd;

gupNrhjidia xOq;fikj;jtpjk; glj;jpw; fhl;bathW

,jd; NghJ khztdhy; mupa Kfj;jpw; njwpj;J tUk; gpstpd; tpk;gj;ij ntw;Wf;fz;zhy;

mtjhdpf;f Kbe;j NghJk; njhiyfhl;ba+L mthjdpf;fKbatpy;iy. ,jw;fhd fhuzj;ij Fwpg;gpLf.

04. mOj;jkhdp xd;iwg;gad;gLj;jp mk;gpaHkhdp xd;iw msT Nfhblg;gLk; Rw;W glj;jpw; fhl;lg;gl;Ls;sJ.

,q;F fhl;lg;gl;Ls;s Y MdJ E vDk; kpd;dpaf;ftpirAila epakf;fykhFk;.

,q;F E1,E2 vd;gd khwh kpd;dpaf;ftpir cila fyq;fshFk;.

(a) mk;gpaHkhdp A ,d; KidTfis (+/-) Nkw;Fwpj;j Rw;wpw; Fwpg;gjd; %yk; mk;gpaHkhdpiar; Rw;wpy;

vq;qdk; jFe;jthW njhLg;gPH vdf;fhl;Lf?

(b) X vdf; Fwpf;fg;gl;Ls;s Rw;wpd; gFjpapd; Kf;fpaj;Jtk; ,uz;L jUf?

………………...………………………………..………………………………………………………………….

………………...……………………………………………………………………………………………………

………………………………………………..………………………………………………………………….

E1

Y

Z G

Q RRf

i

E2 S Rv

X

P A

E

E

( )

…………………………..……………………………………………………………………………………………

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(c) Fwpj;j gupNrhjidnahd;wpy; epakf;fyj;Jld; ngw;w rkepiyePsk; l1 MfTk; Kid Z [ Q cld;

,izj;Jg;ngw;w rkepiyePsk; l2 MfTk; ,Ug;gpd; mr;re;jHg;gj;jpy; mk;gpaHkhdp Clhf kpd;Ndhl;lk;

i ,w;fhd Nfhit xd;iw E, Rf, l1, l2 rhHgpw;ngWf?

………………...………………………………..………………………………………………………………….

………………...………………………………..………………………………………………………………….

………………...………………………………..………………………………………………………………….

(d) epakf;fyj;jpd; kpd;dpaf;ftpir E = 1.2V MfTk; l1, l2 ,w;Fg; ngwg;gl;l ngWkhdq;fs; KiwNa

32cm, 80cm MfTk; Rf =1Ω MfTkpUg;gpd; kpd;Ndhl;lk; (i) [f; fzpf;f?

………………...………………………………..………………………………………………………………….

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(e) Nkw;Fwpj;j Rw;wpYs;s mk;gpu;khdpa+L (1) kpd;Ndhl;lk; vJTk; nry;yhjNghJ (2) NkNy (d) ,y;

fzpf;fg;gl;l kpd;Ndhl;lk; i nry;Yk; NghJs;s fhl;bapd; epiyfs; glj;jpw; fhl;bathW.

i. mk;gpaHkhdpa+L 2i kpd;Ndhl;lk; nry;Yk; Nghjhd fhl;bapd; epiyia cU (2) ,y; tiue;Jfhl;Lf.

ii. ePHNkNy (e) (2) ,y; mt;thW tiuaf;fhuzk; ahJ?

………………...…………………………………………………………………………………………………

……………………..……………………………..……………………………………………………………

iii. mk;gpaHkhdpapd; ,opntz;zpf;if ahJ?

………………...………………………………..………………………………………………………………

(f) mk;gpHkhdp nfhz;Ls;s mfj;jiliaj; Jzpa Ntz;bAs;sJ.

i. ,jw;fhf NkYk; xU mstPl;ilg;ngw Ntz;bAs;sJ. ,t; mstPl;bw;fhf Kid Z [ Gs;spfs;

P,Q,R,S ,y; vjDld; njhLg;gPH?

………………...………………………………..………………………………………………………………

ii. khWjil RV (d) ,y; mstPL l2 ngWtjw;fhfr; nrg;gQ;nra;jpUe;j mNjngWkhdj;Jld; NkNy f(i)

,Ys;sthW njhLj;Jg;ngw;w rkepiyePsk; 240cm Mapd; mk;gpaHkhdpapd; mfj;jiliaf; fzpf;f?

………………...………………………………..…...……………………………………………………………

….………………...………………………………..……………………………………………………………

cU (1) cU (2)

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05. (a)

Gupapilj;Juk; 1mm MfTs;s 5mm MiuAila GupahzpkPJ 8mm jbg;Gila el;L,

GupahzpnghUj;jg;gl;Ls;s RtupypUe;J 2cm ,Ys;sijg;glk; fhl;LfpwJ.

i. el;L> RtupilNa cs;s Gupfspd; vz;zpf;if ahJ?

ii. el;L Rtiuj;njhlr;nra;tjw;fhd khwhr;Row;rp mjpHntz;Zld; Row;wg;gLfpwJ. el;L Rtiu

kl;Lkl;lhfj; njhl 10S Neuk; vLj;jpUg;gpd; Row;rp mjpHntz; rpm ,y; ahJ?

iii. ,jd; NghJ Gupfs; el;bw;F cuha;T KWf;fk; τb [ toq;Ffpd;wd. Nkw;$wpathW el;bid efHj;j

0.01Nm vDk; KWf;fk; toq;fNtz;bapUg;gpd; cuha;T KWf;fk; τb [f; fhz;f?

(b) GupRtiuj;njhl;lgpd; ,Wf;fg;gLtijf; fUJf.

i. cilahtz;zk; Gup xd;wpdhw; jhq;ff;$ba caHtpir 200N MFk;. ,Wf;fypd; NghJ RtH el;L

,ilNa ,Uf;fj;jf;f caH kWjhf;fk; ahJ?

ii. ,Wf;fg;gLjw; nraw;ghl;by; Fwpj;j fzepiyapy; RtH el;L ,ilapyhd kWjhf;fk; 1000N

MfTs;sJ. ,e;epiyapy; Gup> el;L ,ilapyhd kWjhf;fk; fhuzkhf GupahdJ el;L kPJ τb ,w;F

Nkyjpfkhf τt vDk; cuha;T KWf;fj;ijAk; toq;Fk;. el;L> Gup ,ilahd ,af;ftpay;

cuha;Tf;Fzfk; 0.8 Mapd; τt ahJ?

iii. el;L> RtH ,ilNa Fwpj;j fzj;jpd; NghJs;s cuha;T KWf;fk; 5.99Nm vdpd;

,Wf;fiyNkw;nfhs;s el;bd; toq;fNtz;ba ,opT KWf;fk; ahJ?

(c) NkNy fzpf;fg;gl;l KWf;fkhdJ el;bw;Ff;fPo; fhl;ba

rhtp %yk; toq;fg;gLfpwJ. el;L 2cm gf;f ePsKila

mWNfhzp tbthdJ. el;L> Gupahzp xNu ikaj;ijf;

nfhz;ld.

i. toq;fNtz;ba tpir F If; fzpf;f?

ii. ,Nj Gupahzp> el;Lj;njhFjpf;fhf toq;fNtz;ba tpir F [ NkYk; Fiwf;f Nkw;nfhs;sj;jf;f

eilKiw xd;W jUf?

5 mm

25cm

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iii. el;bd; kPJ rhtpahdJ fhl;ba ,UKidfspy; khj;jpuk; fhl;bathW ,U tpirfis toq;Ffpd;wJ.

,t; tpirfs; F1, F2 I fhz;f.

iv. el;bd; KidahdJ kOq;fhky; mDgtpf;fj;jf;f caHtpir 520N MFk;. ,r;re;jHg;gj;jpy; Kid

kOq;fbf;fg;gl tha;g;Gs;sjh? fhuzk; jUf?

v. ,g;gpur;rpidiaj; jtpHf;f rhtpia vq;fdk; jpwDs;s tpjj;jpy; gad;gLj;JtPu;?

(d) el;bid ,Wf;f toq;fNtz;ba KWf;fj;ij ,optsthf;f Ntz;bAs;sJ. ,jw;fhf Kd;itf;fg;gLk;

gpd;tUk; eilKiwfspy; rupahdtw;iwj; njupT nra;f.

A - jbg;Gf;$ba el;ilg;gad;gLj;jy;

B - el;L> RtupilNa mOj;jkhd ,wg;gH thrH xd;iwg; gad;gLj;jy;

C - mfyk; $lthf cs;s el;ilg;gad;gLj;jy;

D - el;L> Gup ,ilahd cuha;Tf;Fzfk; FiwthAs;s el;ilg; gad;gLj;jy;.

06.

(a) xU Kid %ba Foha; xd;wpYs;s tspepuy; mbg;gil tifapy; gupTWtij mUfpYs;s glk;

fhl;Lfpd;WJ. ,f;Fohapd; ePsk; l MFk;.

i. ,f;FohAld; mbg;giltifapYk; Kjyhk; Nkw;nwhdpapYk; gupTWk; tspepuypd; miy

ePsq;fisj;jUf.(KidtOf;fisg;Gwf;fzpf;f)

ii. tspapy; xypapd; fjp V Mf ,Ug;gpd; ,f;Fohapd; mbg;gil , Kjyhk; Nkw;nwhdp

mjpHntz;fisj; jUf.

iii. ,f;Fohapy; epd;w miy cUthfpAs;s NghJ Gs;sp A apyh Gs;sp B apyh mKf;fkhw;wk;

caHthFk; vdf;Fwpg;gpl;L mKf;fkhw;wk; caHthfTs;s Gs;spapy; Neuj;Jld; mKf;fk;

khWgLtij tiughf;Ff.

(b) tpyq;Ffspd; Gwr;nrtp NkNyAs;sJ Nghd;w

xU Kid %ba FohahFk;. Gwr;nrtpapYs;s

tsp epuy; mjpHtjhy; nrtpg;giw nkd;rt;tpy;

Vw;gLk; mKf;f khw;wk; fhuzkhf nrtpg;giw

nkd;rt;T mjpUk;. ,jdhy; cl;fhjpDs;

Vw;gLj;jg;gLk; kpd;Jbg;ghdJ %isia

miltjhy; mit xypia czHfpd;wd.

kpd;Jbg;G Vw;gLtjw;F rpwpa mKf;fkhw;wNk

NghJkhdJ.; Gwr;nrtpapy; cs;s

tspepuyhdJ xyp miyAld; gupTWk; NghJ

nrtpg;giw nkd;rt;tpy; fZ cUthtjhy;

mKf;fkhw;wk; caHthFk;. ,jdhy; ,t; xyp

miyfspd; kPbwd;fSf;Fk; mjw;F fpl;ba

kPbwd;fspw;Fk; nrtpahdJ czHjpwd;

$bajhf fhzg;gLk;. rhjhud kdpjf;fhjpdhy;

czuf;$ba ,opT xypr;nrwpTkl;lk;

mjpHntz;Zld; khWgLtij cU-I ,Ys;s

tiuG fhl;Lfp;wJ. (tspapy; xypapd; fjp 336

ms-1 vdf;nfhs;f.)

0

10

20

30

40

50

60

70

80

100 1000 f1 f2

dB

Hz

β

cU-I

A B

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i. kdpjg;Gwr;nrtpapd; ePsk; 2.4cm MftpUg;gpd; f1 , f2 ,d; ngWkhdq;fisf; fzpf;f.

ii. ahidf;Fk; vypf;Fk; Md mjpH ntz;Zld;

xypr;nrwpTkl;lkhwYf;F kdpjDld; xg;gpl;L

tiuag;gl;l tiuGfs; cU-II ,y; jug;gl;Ls;sd.

ahidf;Fk; vypf;FKhpa f1 f;F xj;j ngWkjpfs;

mUfpYs;s tiugpy; cs;sthW miktjw;Fupa

fhuzk; ahJ?

iii. kdpjf;fhjpdhy; czuf;$ba 100Hz mjpH

ntz;Zila xypmiyapd; ,opTr;nrwpT 2x10-9

Wm-

2 vdpd; β itf;fhz;f.(lg 2 = 0.3 vdf;nfhs;f.)

iv. tspapy; xU xyp miyapy; xypr; nrwpT I MdJ 22f2a

2ρv vDk; rkd;ghl;lhy; nfhLf;fg;gLk;

vdpd; kdpjf;fhjpdhy; czuf;$ba f1 mjpHntz;Zila xypmiyf;F ,Uf;fNtz;ba ,opT

tPr;rj;ijf;fhz;f.( tspapd; mlHj;jp 1.2 kgm-3 MFk ; 0352.0

3364.2

1

vdf;nfhs;f.;)

v. kdpjf;fhjpy; Nehit Vw;gLj;jf;$ba xyp miyapd; nrwpT 1Wm-2 vdpd; Nehit Vw;gLj;jf;$ba

f1 mjpHntz;Zila xyp miyapd; ,opT tPr;rj;ijf;fzpf;f.

(c) Nfl;ly; FiwghLila kdpjd; xUtdhy; czuj;jf;f f1 mjpHntz;Zila xyp miyapd; ,opT

xypr;nrwpTkl;lk; 30dB vdpd;

i. ,k;kdpjdhy; czuj;jf;f f1 mjpHntz;Zila xyp miyapd; ,opTr;nrwpT ahJ?

ii. ,k;kdpjd; rhjhuz kdpjHfshy; czuf;$ba nrwptpy; f1 mjpHntz;Zila xyp miyfis

czHtjw;F Nfl;ly; rhjdk; xd;iw gad; gLj;JtH vdpd; ,r;rhjdj;jhy; xypr;rf;jpapd; nrwpT

vj;jid klq;fpdhy; mjpfupf;f Ntz;Lk;?.

07.

(a) nurpypd; (Resilin) vd;gJ mrhjhuzkhd kPspay; ,ay;Gfisf; fhl;lj;jf;f xH GujkhFk;. ,J

rpytifg;g+r;rpfspw; fhzg;gLfpwJ. nurpypdpd; jifg;G tpfhu tisap fPNo jug;gl;Ls;sJ. ,t;

tisap ,Oit> neUf;fy; Mfpa ,U re;jHg;gq;fspw;Fk; Vw;GilaJ.

i. Gs;spfs; A,B [ ,dq;fhz;f?

ii. nurpypdpd; aq;fpd;kl;ilf; fzpf;f?

(b) g+r;rp xd;wpy; mjd; rpwFfSld; nurpypd; mjd; clypw;F ,izf;fg;gl;Ls;sJ. ,g;g+r;rp rpwfbf;Fk;

NghJ rpwFfs; NkNy nry;ifapy; nurpypid tpfhukiltJld; rpwFfs; fPNo tUk; NghJ nurpypd;

jsHthf cs;sJ. xU rpwFld; ,ize;Js;s nurpypid jsHthf cs;s NghJ 1cm ePsk;> 1mm2

FWf;Fntl;Lg;gug;igf; nfhz;lJ. xU g+r;rp ,U rpwFfisf; nfhz;bUf;Fk;. g+r;rp rpwfbf;Fk; NghJ

nurpypdpy; Vw;gLk; tpfhuk; 3 MFk;. ,jd; NghJ rpwF NkNy nry;ifapy; ngw;Wf;nfhs;Sk; kPspay;

kdpjd;

ahid vyp

xypr;nrwpTkl;lk;;

mjpHntz; f1cU-II

tpfhuk;

jifg;G

(x106Pa

6

B

A

3

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mOj;j rf;jpia rpwF fPNo tUk;NghJ ntsptpLk.; ,r;rf;jpapd; 96% g+r;rpahy; Ntiy nra;tjw;fhf

ngw;Wnfhs;sg;gLk;.

i. nurpypd; 3 vDk; tpfhukile;Js;s NghJ mjpy;jhf;Fk; tpiria fzpf;f.

ii. ,jd; NghJ xU rpwFld; ,ize;Js;s nurpypdpy; Nrkpf;fg;gLk; rf;jp ahJ?

g+r;rp xd;W me;juj;jpy; epw;gijf;fUJf. ,jw;fhfg; g+r;rp 1s ,w;F 5 jlitfs; vDk; tPjj;jpy;

rpwfbf;f Ntz;bAs;sJ. ,r;re;jHg;gj;jpy; g+r;rpahy; nra;ag;gLk; Ntiy <Hg;G tpirf;nfjpuhdjhFk;.

iii. me;juj;jpy; epw;Fk; NghJ g+r;rpahy; Ntiy nra;ag;gLk; tPjk; (tY) ahJ?

g+r;rp xd;W khwh Ntfj;Jld; fpilahfg; gwg;gij fUJf. ,g;gwj;jypd; NghJ NgZypapd;

tpisTfhuzkhf mjdhy; <Hg;Gtpirf;F vjpuhf nra;a Ntz;ba Ntiyapd; msT Fiwthf

fhzg;gLk;. vt;khwhNtfj;jpy; g+r;rpahdJ fpilahfg; gwf;ifapYk; 0.064W vDk; tY

<Hg;Gtpirf;nfjpuhf Ntiy nra;ag;NghJkhdjhFk;. vdpDk; ,q;F kV vDk; tspj;jil tpir ,Ug;gjhy;

g+r;rp mjw;nfjpuhf Ntiy nra;a Ntz;bAs;sJ.

iv. g+r;rp 20cms-1 vDk; khwh Ntfj;jpy; gwf;Fk; NghJk; xU nrf;fdpw;F 5 jlitfs; tPjj;jpNyNa

rpwfbf;fpwjhapd; k ,d; ngWkjp ahJ?

v. g+r;rpahy; xU nrf;fdpw;F mjpfgl;rkhf 10 rpwfbg;Gf;fis epfo;j;j KbAkhapd; g+r;rpahy; fpilahf

gwf;fj;jf;f caH Ntfk; ahJ?

(c) njs;Sg;g+r;rp (flea) MdJ mjd; ,U gpd;dq;fhy;fspYk; cs;s

(coxa) vDk; gFjpapy; nurpypdhyhd jpz;Lfis (pad)

nfhz;bUf;Fk; mj;jpz;Lfs; 2x10-4m gf;fePsKila rJuKfpahf

fUjyhk; ,g;g+r;rp rpwFfisf; nfhz;bUg;gjpy;iy. nurpypdpd;

cjtpAld; Js;sp NknyOjNy mjd; ,lk;ngaHjy;

cj;jpahFk;. glj;jpy; fhl;bathW nurpypd; jpz;Lfs; tpw;RUs;

Nghyr; nraw;gl;L

RUq;Ftjhy; ngwg;gLk; kPs;jd;ik rf;jpia 92% jpwDld; ,af;frf;jpahfg; ngw;W NknyOe;J

vwpag;ghijapy; ,aq;FfpwJ. njs;Sg;g+r;rpapd; jpzpT 0.46mg MFk;. njs;Sg;g+r;rp mnsfupakpd;wp

milaj;jf;f caH neUf;fy; tpfhuk; 0.5 MFk;.

i. nurpypd; jpz;L xd;wpd; tpirkhwpyp k [ fzpf;f?

ii. tpfhuk; 0.5 MfTs;s NghJ njs;Sg;g+r;rpapd; nurpypd; jpz;L xd;wpw;fhf;Fk; tpiria fzpf;f?

iii. njs;Sg;g+r;rp ngwj;jf;f caH Ntfk; ahJ?

08. Jbg;G kpd;GykhdJ (Pulse Electric Field –PEF) ifj;njhopy; uPjpahd czTj; jahupg;gpw; gad;gLj;jg;gLk;

xH El;gkhFk;.,t; El;gKiw %yk; cztpYs;s Ez;zq;fpf;fyq;fs; rpijtilar; nra;ag;gLfpd;wd

(microbial disintegration) jw;NghJ tiu ,j;njhopDl;gkhdJ gor;rhWfs;> ghy;> Nahf;fl;> jputKl;il

Nghd;wtw;iwf;fpUkpePf;fk; nra;aTk;> rpy czT tiffis cyHj;jTk; gad;gLj;jg;gLfpwJ. tof;fkhd

Kiwfshd xk;Kiw ntg;gkhf;fy; (ohmic heating), Ez;ziy ntg;gkhf;fy; (microwave heating) caH

ePHepiyapay; mKf;fk; (HHP) Nghd;wtw;iw tpl ,k;Kiwapy; mWtil (yield) mjpfkhFk;. NkYk;

,k;Kiw%yk; fpUkp ePf;fg;gl;l czTfs; tof;fj;ijf;fhl;bYk; $ba fhyj;jpw;F Ngzf;$badthf

cs;sd. FWfpa NeuNk Njitg;gly;, Cl;lr;rj;Jf;fspd; (nutritions) ,og;Gf;Fiwf;fg;gly; Nghd;wdTk;

,k;Kiwapd; mD$yq;fshFk;. nehjpaq;fspd; (enzymes) njhopw;ghLtiuaWf;fg;gl;l mstpNyNa

fl;Lg;gLj;jg;gly;> jhtu gf;uPupahf;fis (vegetative bacteria) kl;LNk ghjpj;jy; Nghd;w gpujp$yq;fSk;

cs;sd.

,k;Kiwapy; nfhs;sstp Nghd;w mikg;Gila kpd;tha;j;jl;Lf;fis cila Foha;fs;gad;gLj;jg;gLk;

,tw;wpDlhfj;jput czTfs; njhlHr;rpahfg; gha;r;nra;ag;gl;L jl;LfspilNa Jbg;Gf;fshf kpd;

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mOj;j NtWghLgpuNahfpf;fg;gl;L kpd;Gyk; Vw;gLj;jg;gLfpwJ. kpd;Gyk; Vw;gLj;jg;gLk; NghJ mjDs;

mfg;gLk; fyj;jpd; fyr;Rtupd; cs;>ntsp Nkw;gug;GfspilNa xH mOj;j NtWghil cz;lhf;FfpwJ.

gpuNahf kpd;Gytypik xH mtjpg;ngWkjpapYk; (EC) mjpfupf;Fk; NghJ fyk; kPsKbahj rpijtpw;F

(irreversible disintegration) cl;gLfpwJ.

,jd; Nghjhd fzepiyfs; cUtpw;fhl;bathW.

jl;LfspilNa Jbg;Gkpd;Gyk; gpuNahfpf;fg;gLk; tpjq;fs; gpd;tUkhW

2(a)

2(b)

2(c)

+

+

+ +

+ + + + fhtyp

vspjhf;fpa tiuglk;

1(a)

PEF gpuNahfpf;f Kd; E < Ec fyj;jpy;

Kidthf;fk;

1(b)

PEF + -

1(c)

PEF + -

E > Ec fyr;rpijT

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Nkw;fhl;ba mikg;Gf;fs; 2(a), 2(b), 2(c) fspYs;s ,ilntspfspy; jput czTg;gha;r;ry;

mDkjpf;fg;gLk;. ,t;thwhd kpd;Gyk; gpuNahfpf;fg;gLk; gFjp gupfupg;G miw (treatment chamber) vdg;gLk;

,tw;wpd; gpuNlapyhd (F), nfhs;sstk; (C) gpd;tUk; rkd;ghl;lhw; jug;gLfpwJ.

dC

,q;F τ Jbg;nghd;wpd; fhyg;gFjp (pulse duration) (s), σ – jput cztpd; kpd; flj;Jjpwd; (Ω-1

m-1

),

A – jl;L xd;wpd; FWf;Fntl;Lg;gug;G> d – jl;Lfspilj;Juk; MFk;.

Fwpj;j Njhlk;gor;rhW xd;wpd; gupfupg;gpy; gad;gLj;jg;gLk; 2(a) ,Ys;s tifg;gupfupg;G miw 0.1m2

FWf;F ntl;Lgug;Gila jl;Lf;fisnfhz;lJ. jl;Lfspilj;Juk; 5cm MFk;. ,g;gor;rhW 0.5Ω-1m-1

kpd;flj;Jjpwd; cilaJ. ,q;F gad;gLj;jg;gLk; kpd;Gytypik 20kv/cm MFk;. ,q;F gad;gLj;jg;gLk;

Jbg;Gtbtk; fPo;f;fhl;bathW mikAk; ,j;Jbg;G 1Hz vDk; mjpHntz;zpy; jl;Lfspw;F

gpuNahfpf;fg;gLfpwJ. (1s ,w;F xU Jbg;G)

,g;gupfupg;G miwapy; xU kzp Neuj;jpw;F 3.6 njhd; jput czT gupfupf;fg;gLfpwJ.

(a) czT cw;gj;jpj;Jiwapy; PEF ,d;gad;ghL 2 jUf?

(b) czT cw;gj;jpapy; PEF gad;gLj;jg;gLtjd; mD$yk;> gpujp$yk; xt;nthd;W jUf.

(c) Ez;zq;fpf; fyk; Jbg;G kpd;Gyj;jhw; (PEF) rpijf;fg;gLk; tpjj;ij RUf;fkhff; Fwpg;gpLf?

(d) 2(a),2(b),2(c) Mfpatw;wpd; vspjhf;fpa tiuglq;fis gpujpnra;J kpd;tpirf;NfhLfis tiue;J

fhl;Lf.

(e) Fwpj;j Njhlk; gor;rhW gupfupg;igf;fUJf?

i. rkd;ghL d

AC

gupkhzKiwg;gb rupahdJ vdf; fhl;Lf.

ii. jl;Lfspilg;gl;l nfhs;sstj;ijf; fhz;f?

iii. jl;LfspilNa Jbg;G kpd;Gyk; gpuNahfpf;fg;gLk; NghJ cs;s mOj;jNtWghLahJ?

iv. gupfupg;G miwf;F nfhLf;fg;gLk; kpd;rf;jpapd; tY ahJ?

v. ,jpypUe;J xuyF jpzpT gor;rhWf;fhfr; nryT nra;ag;gLk; rf;jpia kJ/kg ,y; fzpf;f?

(f) ,q;F kpd;Gyj;Jbg;ig cUthf;fg;gad;gLk; Rw;wpy; vspjhf;fpa tiuglk; fPo;f;fhl;bathW mikAk;.

i. B,D ,ilNa kpd;njhLif Vw;gLj;jg;gl;Ls;s epiyapy; cWjpaila tplg;gbd; gupfupg;G miwapd;

nfhs;sstpapy; Nrkpf;fg;gLk; Vw;wk; ahJ?

ii. ,r;RoYk; MspapYs;s RoYk;gFjp khwhf;NfhzNtfj;Jld; Roy;fpwjhapd; gupfupg;G miwf;Ff;

FWf;Nf mOj;j NtWghl;bd; khwiyf; fhl;Lk; tiuig tiue;J fhl;Lf?

τ=10μs

1s

100Kv

gupfupg;G miw

10μF

A

D B

C

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09.

gFjp (A) ,w;F my;yJ gFjp (B) ,w;F khj;jpuk; tpil vOJf.

A. gpujhd tYtoq;fy;fSld; (240V) ,izf;fg;gLtjw;fhf tbtikf;fg;gl;l shower system xd;wpd;

vspa mikg;gpid fPOs;s glk; fhl;LfpwJ.

glj;jpy; fhl;lg;gl;l nraw;ghl;Lj;njhFjpahdJ, xd;W my;yJ ,uz;L 3.6kW tYTila

ntg;gkhf;fpfSld; njhopw;glf; $baJ.

(a) K1,K2 Mfpa ,U MspfSs; xU Msp kl;Lk; Nghlg;gl;l epiyapy; gpujhd toq;fypy; ,Ue;J

vLf;fg;gLk; kpd;Ndhl;lk; ahJ

(b) 10AcUfp, 16AcUfp, 31AcUfp Mfpa jug;gl;l cUfpfSs; ghJfhg;gpw;fhf ,r;Rw;Wld; ,izf;fg;gl

Ntz;ba kpfg;nghUj;jkhd cUfp ahJ;

(c) ,r; Shower MdJ K1,K2 ,U MspfSk; Nghlg;gl;l epiyapy; ehs; xd;wpw;F ; ruhrhpahf 30

epkplj;jpw;Fr; nraw;gLj;jg;gLfpwJ. 30 ehl;fs; nfhz;l khjj;jpw;fhd nryT ahJ (kpd;rf;jpf;fhd

nryT xU fpNyhthw;W kzpj;jpahyj;jpw;F &20.00 MFk;)

(d) ntg;gkhf;fp njhopw;gLk; epiyapy; RUs; xd;wpd; jilahJ?

(e) ntg;gkhFk; RUs; Mf;fg;gl;l fk;gpj; jputpaj;jpd; nraw;gLk; ntg;gepiyapy; jilj;jpwd; 4.5 x10-7

Ωm

ck; fk;gpapd; tpl;lk; 0.30mm ck; vdpd; RUs; xd;wpYs;s fk;gpapd;; ePsk; ahJ?

(RUs; Mf;fg;gl;l gjhh;j;jj;jpd; jilj;jpwd; 4.5 x10-7

Ωm vdf; nfhs;f)

(f) RUs; Mf;fg;gl;l %yfj;jpd; jil khwy; Fzfk;

0

0

R

RR vdj;jug;gLfpd;wJ. ,r;RUs;

Mf;fg;gl;l ; %yfj;jpd; 15105.7 Co MFk;.

i. Nkw;Fwpj;j R0 ,dhy; tpsf;FtJ ahJ?

ii. ; nraw;gLifapy; RUspd; ntg;gepiy 2000C vdpy; R0 ,idf; fhz;f.

(g) Fwpj;j xU ehspy; shower njhopw;gLk; NghJ cl;GFk; ePupd; ntg;gepiy 100C Mf ,Uf;Fk; NghJ

ePHg;gha;r;ry; tPjk; 3.6 x10-3

m3min

-1 ,w;F rupnra;ag;gl;lJ. ePupd; jd;ntg;gf; nfhs;ssT 4200Jkg

-1K-

1

ePupd; mlHj;jp 1000kgm-3

.

i. xU ntg;gkhf;Fk; RUs;kl;Lk; njhopw;gLk; NghJ ntspNaWk; ePupd; ntg;gepiy ahJ?

ii. ,U ntg;gkhf;Fk; RUs;fSk; nraw;gLj;jg;gLk; NghJ ntspNaWk; ePupd; ntg;gepiy tpdh (g)i

,y; fzpf;fg;gl;l ngWkhdj;jpw;F rkdhtjw;F ePHg;gha;r;ry; tPjj;jpid vg;ngWkjpf;F

rhpnra;ag;gly; Ntz;Lk;

iii. Fsph;fhyq;fspy; ephpd; ntg;gepiy 100CI tpl Fiwthf miktjhy; ntspNaWk; ePupd;

ntg;gepiy tpdh (g)i ,y; fzpf;fg;gl;l ngWkhdj;jpw;F rkdhtjw;F ePHg;gha;r;ry; tPjj;jpid

ntg;gkhf;fp RUs;fs;

K2

K1

gpujhd tYtoq;fypw;F

jpUfp;

ePh; njhl;bapypUe;J; ePh;

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Fiwj;jy; Ntz;Lk;. ,jdhy; shower ,ypUe;J Njitahd ePh; gad;ghl;L Neuj;jpy;

ngwKbahJ Ngha;tpLk; vdNt ,g;gpur;rpidia epth;j;jp nra;a ntg;gkhf;Fk; ,U RUs;fspdJk;

ePsq;fs; Fiwf;fg;gl;L gad;gLj;jg;glyhk; vd vjph;T $wg;gl;lJ. ,t; vjph;T $wypd;

rhj;jpaj;jpidAk; ,lh;ghbidAk; mghaj;jpidAk; jdpj;jdpNa tpghpf;f

B. jpwe;j jil eak; 105 MfTs;s nraw;ghl;L tpupayhf;fp xd;iwAk; ,jDlhd gag;G mOj;jk; Vo

MdJ nga;g;G mOj;jj;Jld;(Vin) khWgLk; tisapiaAk; fPOs;s cU fhl;Lfpd;wJ. nraw;ghl;L

tpupayhf;fpapd; nga;g;Gj;jil kpf caHT vd;gjhy; ,jd; nga;g;G Kbtplq;fSf;fpilNaahd

kpd;Ndhl;lk; Gwf;fzpf;fj;jf;fJ.

(a)

(i) ,t;tpupayhf;fp epuk;gyilaj; Njitahd Vin ,d; ,opT NeHg; ngWkjp; (Vmin) iaf;fhz;f.

(ii) V2 ,d; ngWkjp 1V MFk; NghJ nraw;ghl;L tpupayhf;fpapy; gag;G mOj;jk; 5V

ngwj;Njitahd V1 ,d; ,opTg; ngWkjpiaf; fz;L mz;zsthf 1V f;F rkd; vdf; fhl;Lf.

(b)

NkNyAs;s nraw;ghl;L tpupayhf;fpapd; kiw KbtplkhdJ 1V mOj;jj;Jf;F epue;jukhf

,izf;fg;gl;Ls;sJld; NeH Kbtplj;ij khWk;jil AC f;F FWf;Nf efHj;Jtjd; %yk;

NeHKbtplj;jpYs;s mOj;jk; V1 MdJ khw;wg;gLfpd;wJ

(i) ;V1 MdJ 1V MftpUf;Fk; tifapy; nrg;gQ;nra;ag;gl;Ls;sepiyapy; AX f;F FWf;Nfahd

jil 1k Mf mike;jJ vdpd; AC f;F FWf;Nfahd jilapd; ngWkjpiaf;fhz;f.

(ii) nraw;ghl;L tpupayhf;fp epuk;gyilaj;Njitahd ,opT nga;g;G NeuOj;jk; (Vmin)

ngwg;glf;$bajhf Gs;sp X khWk; jilapYs;s epiyapy; AX f;F FWf;Nfahd jilapd;

ngWkjpiaf;fhz;f.

(iii) Vin MdJ g+r;rpaj;jpypUe;J Vmin f;F mjpfupf;Fk; NghJ AX f;F FWf;Nfahd jilapy;

Vw;gLk; khw;wk; AC f;F FWf;Nfahd jilAld; xg;gpLk; NghJ Gwf;fzpf;fj;jf;fnjdf;

fhl;Lf

.

2V

X

A

C

+

-

Vo

V1

1V

+

-

Vo

V1

V2

Vo

Vin(V1-V2)

5V

-5V

-16-Al/2018/01/T-11

[gf;. 17 Ig; ghu;f;f

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(c) gy miwfisf;nfhz;l tpLjp (Hotel) xd;wpd; thlif, miwapd; mbg;gil thlifAld; rpy

Nkyjpf thliffisAk; nfhz;L jPHkhdpf;fg;gLfpd;wJ. ,k; Nkyjpf thliffspy; xd;W

tspg;gjdhf;fp nraw;gLk; ntg;gepiy, nraw;gLk; Neuk; vd;gtw;iw nfhz;L

jPHkhdpf;fg;gLfpd;wJ. ,t;thlif Fwpj;j ntg;gepiy MapilfSf;F Fwpj;j ngWkjpahf

jPHkhdpf;fg;gLfpd;wJ. ,t;ntg;gepiy Mapilfs; xspUk; LED fspd; vz;zpf;ifia nfhz;L

mtjhdpf;fg;gLfpd;wJ. xspUk; LED fspd; vz;zpf;ifiaiaAk; mit xspUk; Neuj;ijAk;

czUk; czupAld; ,izf;fg;gl;l fzdpapdhy; Nkyjpf thlif fzpg;gplg;gLfpd;wJ.

xt;NthH miwf;Fk; cupa LED njhFjpfs; fl;Lg;ghl;L miwapy; fhzg;gLfpd;wJ.

,t;tiwapYs;s LED njhFjp xd;iw fPNoAs;s cU fhl;Lfpd;wJ

miwapd; ntg;gepiy mjpfupf;f xspUk; LED fspd; vz;zpf;if mjpfupg;gJld; Fwpj;j LED

xspu Muk;gpf;Fk; ntg;gepiy mt; LED f;F ,lg;gf;fj;jpYs;s ntg;gepiy mstPl;bypUe;J

ngwg;glyhk;. 270C f;F Nkw;gll ntg;gepiyfspy; vy;yh LED fSk; xspUk; mNjNtis 17

0C f;F

Fiwe;j ntg;gepiyfspy; vy;yh LED fSk; mize;J tpLk;. ,e;Nehf;fj;jpw;fhf tbtikf;fg;gl;l

nraw;ghl;L tpupayhf;fr;Rw;nwhd;wpd; g+Hj;jp nra;ag;gl;l tupg;glk; fPNo jug;gl;Ls;sJ.

,r;nraw;ghl;L tpupayhf;fpapd; NeHepuk;gy; Nthy;w;wsT 5V MdJ LED ge;jpia xspur;nra;ag;

gad;gLfpd;wJ.

ntg;gepiy xt;NthH 0C ,dhYk; caUk; NghJ ntg;gepiy czupapypUe;J ngwg;gLk; mOj;jk;

500mV ,dhy; mjpfupf;ff; $baJ. NkYs;s LED fspd; jFe;j nraw;ghl;lf;F Vw;w tpjj;jpy;

R,R1,R2,R3,R4 ,d; ngWkhdq;fs; vspa tpfpjj;jpy; njupe;njL;f;fg;gl;Ls;sd.

(i) NkNy tpgupf;fg;gl;l LED ge;jpapd; jf;fthwhd nraw;ghl;bw;F nraw;ghl;L

tpupayhf;fpapd; NeH Kbtplkh/kiw Kbtplkh ntg;gczupapy; ,Ue;J ngwg;gLk;

mOj;jj;Jld; ,izf;fg;gl Ntz;Lk;

(ii) L5 xspu Muk;gpf;ifapy; my;yJ mizAk; fzj;jpy; ntg;g czupapy; ,Ue;J

ngwg;gLk; mOj;jk; ahJ?

(iii) NkNy tpgupf;fg;gl;l LED fspd; jf;fthwhd nraw;ghl;bw;F P,Q,R,S ,y; ,Uf;f

Ntz;ba mOj;jq;fs; Vp, Vq, Vr, Vs Ij; jUf.

(iv) NkNy tpgupf;fg;gl;l LED fspd; jf;fthwhd nraw;ghl;bw;F R1,R2,R3,R4 ,d;

ngWkhdq;fis R ,d; rhHgpy; jUf

(v) tYtoq;fpapypUe;jhd kpd;Ndhl;lk; 1mA Mf mikAk; tz;zk; jilfspd;

ngWkhdq;fs; nrg;gQ; nra;ag;gbd; .jil R ,d; ngWkjpiaf; fhz;f.

L1 L2 L3 L4 L5

17 18 20 23 27

L1 L2L3 L4 L5

P Q R S

ntg;gepiy

czupapypUe;J

6V R R1

R2 R3 R4

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(d) NkYs;s miwahdJ tspg;gjdhf;fpAld; ,ize;J nraw;glf;$bajhf kpd;tprpwpnahd;iwAk;

kpd;Fkpnohd;iwAk; nfhz;Ls;sJ. ,t;tiwapy; tspg;gjdhf;fp nraw;gLj;Jk;NghJ kpd;Fkpo;

xspuNtz;bapUg;gJld; kpd;tprpwp epWj;jg;gl Ntz;bAKs;sJ.; Mdhy; tspg;gjdhf;fp

nraw;gLj;jg;glhj Neuq;fspy; kpd;FkpOk; kpd;tprpwpAk; mtw;Wf;Fupa Mspfspd; %yk;

nraw;gLjjg;glf;$bait. tspg;gjdhf;fp ,y;yhj Neuq;fspy; kpd;Fkpio xspur;nra;jJk;

kpd;tprpwp jhdhfNt nraw;gLj;jg;gl Ntz;Lk;. tspg;gjdhf;fp nraw;gLk; NghJ A=1 vdTk;

kpd;FkpOf;Fupa Msp %lg;gLk; NghJ B=1 vdTk; kpd;tprpwpf;Fupa Msp Klg;gLk; NghJ C=1

vdTk; nga;Gf;fisf; nfhz;Lk; kpd;tprpwp nraw;gLk; NghJ gag;G F1=1 vdTk; kpd;Fkpo;

xspUk; NghJ gag;G F2=1 vdTk; gag;Gf;fisf; nfhz;Lk; NkYs;s rhjdq;fspd;

njhopw;ghl;Lf;Fupa cz;ik ml;ltidiaj; jahupf;Ff.

10.

gFjp (A) ,w;F my;yJ gFjp (B) ,w;F khj;jpuk; tpil vOJf.

A. 60kg jpzpTila kujd; Xl;l tPuhq;fid xUtH XLtjw;F Maj;jkhf xa;tpy; cs;s NghJ clypd;

mDNrgj; njhopw;ghl;bd; NghJ gpwg;gpf;fg;gLk; ntg;gtPjk; 300W MFk;. Fwpj;j ehspy; #oy;

ntg;gepiy ruhrupahf 300C Mf cs;sJ. mg;NghJ clypd; ntg;gepiy 38

0C ,y; khwhJ cs;sJ.

,tH Xl Muk;gpj;jJk;. clypd; ntg;gk; gpwg;gpf;Fk; ruhrup tPjk; 840W ,dhy; mjpfupf;fpwJ.

(a) #oy; ntg;gepiyapYk; cly; ntg;gepiy caHthf ,Ug;gjw;fhd fhuzk; ahJ?

(b) tPuhq;fid xa;tpy; cs;s NghJ clypy; ,Ue;jhd ntg;g ,og;G tPjk; ahJ?

(c) Xl Muk;gpj;jTld; clypd; ruhrup ntg;g mjpfupg;G tPjk; ahJ?

(d) epa+l;ldpd; Fspuy; tpjpf;fika clypy; ,Ue;J ntg;g ,og;G Vw;gLfpwJ> vdf; nfhz;L mts;

XLk; Ntisapy; mts; milaf;$ba caH ntg;gepiy ahJ?

(e) clypd; ntg;gepiy 460C I mz;kpf;Fk; NghJ clypy; cs;s rpy fyq;fs; ,we;Jtplf;$Lk;

(%isf;fyq;fs;) MfNt clyhdJ ,t;thwhd re;jHg;gq;fspy; clypd; ntg;gepiyia

cauhjthW #oypw;F ntg;gj;ij $ba msT ,og;gjw;F clypy; ,Ue;J ePH ntspNaw;wg;gl;L

Mtpahjy; %yk; ntg;gk; ,of;fg;gLfpwJ. ,t;thwhd nraw;ghl;by; cly; jdJ ntg;gepiyia

440C ,y; NgZfpwJ Mapd;>

i. 440C ,y; cly; ntg;gepiy Ngzg;gLk; NghJ epa+l;ldpd; Fspuy; tpjpf;F mikthd clypy;

,Ue;jhd ntg;g ,og;G tPjk; ahJ?

ii. cly; jdJ ntg;gepiyia 440C ,y; NgZtjw;F clypy; ,Ue;J Mtpahf Ntz;ba ePupd;

,opTj;jpzpT?

iii. tpdh (e) (ii) ,y; ePH vLj;j vLNfhs; ahJ?

(f) mtsJ Xl;lg;ghijapy; #oy; ntg;gepiy 300C MfNt ,Uf;f xU fhl;Lg;gFjpapDL nry;Yk;

NghJ cly; jdJ ntg;gepiyia 440C ,Yk; rw;W caHe;j ntg;gepiyapNy Ngzf;$bajhf

,Ue;jJ ,jw;F rhj;jpakhd fhuzk; ahJ?

(g) kujd; XLgtHfSf;F Xl;l Cf;Ftpg;ghsHfs; mtHfs; kPJ ePH gha;r;RthHfs;. ,jdhy; Vw;gLk;

ed;ik xd;Wk; jPik xd;Wk; jUf.

clypd; ruhrup jd;ntg;gf; nfhs;ssT - 4200Jkg-1

K-1

440C ,y; ePupd; Mtpahjypd; jd;kiw ntg;gk; - 2.025 x 10

6Jkg

-1

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B. Id;];uPd; ,d; xspkpd; rkd;ghl;il cupa FwpaPLfSld; je;J FwpaPLfis ,dq;fhz;f.

glj;jpy; cUis tbt nrg;G tiy xd;why; #og;gl;l kf;dPrpak; ehlh fhl;lg;gl;Ls;sJ. ,e;ehlhTk;

cUisAk; jil R xd;wpw;Ff; FWf;fhf 6V kpd; fyj;Jld; ,izf;fg;gl;Ls;sd. jilf;Ff;

FWf;Nfahd mOj;jNtWghl;il tpupayhf;fk; nra;J mstpLtjw;fhf tpupayhf;fp xd;Wk;

Nthy;w;Wkhdp xd;Wk; ,izf;fg;gl;Ls;sd.

(a) (gpshq;fpd; khwpyp = 6.6 x10-34

Js, ntw;wplj;jpy; kpd;fhe;j miyapd; Ntfk; =3x108ms

-1)

i. kf;dPrpak; ehlh 254nm miyePsKila ,ur tpsf;fpdhy; xspUa+;l;lg;gLk; NghJ jil R

,Dlhf kpd;Ndhl;lk; gha;tJ Nthy;wWkhdp thrpg;igf; fhl;LtjpypUe;J cWjp nra;ag;gLfpwJ.

,q;F kpd;Ndhl;lk; cUthFk; Kiwapid tpsf;Ff.

ii. xsp kpd;fyj;jpd; X,Y Kidfis ,dq;fhz;f.

iii. ,r;Rw;wpYs;s 6V kpd;fyj;jpd; gad;ghL ahJ?

iv. R = 10Ω, tpupayhf;fpapd; nga;g;Gj; jil 106Ω, tpupayhf;fpapd; mOj;j tpupayhf;fk; = 10

5

MFk;. ,ur xsp kpd;fyk; kPJ gLk; re;jHg;gj;jpy; Nthy;w;khdp 1V thrpg;igf; fhl;LfpwJ. ,t;

xspapdhy; myF Neuj;jpy; tpLtpf;fg;gLk; ,yj;jpud;fspd; vz;zpf;if ahJ?

(b) ,ur xsp Nghl;Nlhd;fspd; rf;jpia fPo;j;jug;gl;l miy ePsq;fSf;Ff; fhz;f.

i. 254nm

ii. 546nm

(c) ,g;gupNrhjidia fPo;j;jg;gl;l ntt;Ntwhd re;jHg;gq;fspy; Nkw;nfhs;Sk; NghJ Nthy;w;Wkhdp

thrpg;G njhlHghd ckJ mtjhdq;fisj; jUf. ,ur tpsf;fpd; xsp miyapd; miyePsk; 254nm

kf;dPrpak;> gpj;jisapd; Ntiyr;rhHGfs; KiwNa 2.80eV, 5.05eV

i. kpd;fyj;jpd; Kidia khw;Wjy;

ii. ,ur xsp tpsf;if kf;dPrpak; ehlhtpypUe;J njhiytpw;Ff; nfhz;L nry;yy;

iii. ,ur xsp tpsf;fpypUe;J ntsptUk; xspaiyapd; miyePsk; 546nm Mf caHe;jg;gly;

iv. kpd;fyj;jpd; kpd;dpaf;f tpiria 10V Mf mjpfupj;jy;

v. kf;dPrpak; ehlhtpw;Fg; gjpyhfg; gpj;jis ehlh gad;gLj;jg;gly;.

V R

xsp Nghl;ld;

kf;dPrpak; ehlh

nrg;G tiy

X Y

nraw;ghl;L

tpupayhf;fp

6V

-19-Al/2018/01/T-11

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